Sony PLM-A55E Service Manual page 37

• YM-11P BOARD IC103 MC141628FUEB (Y/C SEPARATOR A/D, D/A CONVERTER)
Pin No. Pin Name
1 VCOVDD
2
BIAS
3
OSCV
4
DAGND
5
Y OUT
6
DAVCC
7
C OUT
8
DAREF
9
IBIAS
10
TEST
11
PAL/NTSC
12
BYPASS
13
PLLSEL
14 ADGND
15 ADVDD
16 CLC
17 CLOUT
18 V IN
19 RBT
20 RTP
21 to 28 TB7 to TB0
29 CLK IN
30 DVDD
31 PCOUT
32 DGND
I/O
— Power supply terminal (+5V) (for VCO)
I Bias current input terminal (for VCO)
VCO control voltage input terminal Signal input from the PCOUT (pin #¡)
I
— Ground terminal (for D/A converter)
O Brightness signal output terminal
— Power supply terminal (+5V) (for D/A converter)
O Chroma signal output terminal
— Reference voltage terminal (for D/A converter)
— Current control terminal of bias circuit for D/A, A/D converters
I Setting terminal for the test mode (Normally: fixed at "L")
Setting terminal for the video mode (NTSC/PAL)
I
"L": PAL mode, "H": NTSC mode (fixed at "L" in this set)
I Setting terminal for the bypass selection (Normally: fixed at "L")
For setting whether clock is entered by color subcarrier input (built-in PLL operation) or by
I
external clock input "L": built-in PLL operation (fixed at "L" in this set)
— Ground terminal (for A/D converter)
— Power supply terminal (+5V) (for A/D converter)
I For setting time constant for internal clamp circuit (Normally: fixed at "H")
O Clamp voltage output terminal Not used (open)
I Video signal input to the internal A/D converter
Bottom reference voltage for A/D converter
—
Internal bottom reference voltage is supplied
Top reference voltage for A/D converter
—
Internal top reference voltage is supplied
I/O In/out terminal for the digital interface Not used (fixed at "L")
I Color subcarrier input from the CXA1950Q (IC201)
— Power supply terminal (+5V) (digital system)
O Phase comparator output terminal
— Ground terminal (digital system)
Function
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